| /* Return the pointer to the end of string, using SSE4.2 |
| Copyright (C) 2009 Free Software Foundation, Inc. |
| Contributed by Intel Corporation. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <sysdep.h> |
| #include "asm-syntax.h" |
| |
| .section .text.sse4.2,"ax",@progbits |
| ENTRY (__strend_sse4) |
| pxor %xmm2, %xmm2 |
| movq %rdi, %rcx |
| andq $~15, %rdi |
| movdqa %xmm2, %xmm1 |
| pcmpeqb (%rdi), %xmm2 |
| orl $0xffffffff, %esi |
| subq %rdi, %rcx |
| shll %cl, %esi |
| pmovmskb %xmm2, %edx |
| andl %esi, %edx |
| jnz 1f |
| |
| 2: pcmpistri $0x08, 16(%rdi), %xmm1 |
| leaq 16(%rdi), %rdi |
| jnz 2b |
| |
| leaq (%rdi,%rcx), %rax |
| ret |
| |
| 1: bsfl %edx, %eax |
| addq %rdi, %rax |
| ret |
| |
| END (__strend_sse4) |
